Please find below comments to the issues mentioned. If these are still a concern, please explain in further detail so that the author may address the issues.
Generally there should be no external links in the body of the article. Try to limit external links to just the references and external links sections.
Yuri Git (talk) 20:11, 29 January 2013 (UTC): The limited number of external links provide required references to relevant facts and materials.
Some of the references are in Polish or Russian. Additional English-language references would be helpful for verification.
Yuri Git (talk) 20:11, 29 January 2013 (UTC): Unfortunately there are not enough references in English (the artist was from the USSR), so the article includes some additional tangible refernces in Russian and Polish.
20:11, 29 January 2013 (UTC) —Wbm1058 (talk) 14:22, 29 January 2013 (UTC)
Yuri Git (talk) 20:14, 29 January 2013 (UTC): To sum up I guess that the mentioned issues, originally related to an initial draft of the article, are not really relevant to the current version of the article.